Remove feature flag check from cadences resolver

We need cadence Id's generally available so they can be
sent as an argument when creating an issue associated with an iteration
using the `CURRENT` iteration wildcard ID

EE: true

ee/app/graphql/resolvers/iterations/cadences_resolver.rb

@@ -31,8 +31,7 @@ module Resolvers
 
         args[:id] = parse_id(id) if id.present?
 
-        cadences = ::Iterations::Cadence.none
-        cadences = ::Iterations::CadencesFinder.new(current_user, group, args).execute if group.iteration_cadences_feature_flag_enabled?
+        cadences = ::Iterations::CadencesFinder.new(current_user, group, args).execute
 
         offset_pagination(cadences)
       end

ee/spec/graphql/resolvers/iterations/cadences_resolver_spec.rb

@@ -34,16 +34,6 @@ RSpec.describe Resolvers::Iterations::CadencesResolver do
             expect(resolve_group_iteration_cadences({ id: active_group_iteration_cadence.to_global_id }, parent, { current_user: current_user })).to contain_exactly(active_group_iteration_cadence)
           end
         end
-
-        context 'when iteration cadences feature is disabled' do
-          before do
-            stub_feature_flags(iteration_cadences: false)
-          end
-
-          it 'returns no results' do
-            expect(resolve_group_iteration_cadences).to be_empty
-          end
-        end
       end
     end